Know what your customers remember.
The most reliable source on what made someone buy is the person who just bought. Stella asks at checkout and joins the answer to the same order.
Included from Starter ($750/mo) and up.
Three of these five are invisible to every pixel you have.
Trusted by growth teams who left enterprise measurement vendors
Clicks can’t see everything.
TV, radio, YouTube, podcasts, display, PR, a friend at dinner: none of it leaves a trace a pixel can follow, so none of it shows up in any attribution report you have ever run.
The credit lands on whatever they clicked last, usually a branded search they only ran because of the thing you cannot see.
Ten minutes, through an app you own.
On Shopify, a guided setup connects the survey through an app your store owns, in about ten minutes. Anywhere else, it is a single script tag on the confirmation page.
The discovery question stays fixed so it compares over time; after it, ask whatever you want.
From answers to a signal.
Reported shares become an estimated channel ROAS Stella can weigh. When a channel looks big enough to matter, prove it with a holdout.
The more of your buyers answer, the more weight this signal earns in Stella’s calibration. Evidence, not causal proof.
Illustrative.
Unlimited questions. Unlimited responses.
Competitors meter both; we don’t. Included from Starter.
Same order, two independent records. The gold one is invisible to every pixel on the internet.
See what they clicked and what they said.
The observed path and the stated reason on one order. That is how you find out the campaign taking credit was standing in front of something else.
With Stella, you know.
Where they say they heard about you.
In their words, seconds after they bought.
When TV actually influenced a sale.
The channel no pixel will ever record.
When a podcast did.
Or a creator, or a friend at dinner.
Which dark channels attribution is missing.
The spend that looks worthless because it is unclickable.
How self-reported differs from click-based.
Side by side, on the same orders.
What nearly stopped them buying.
And what convinced them, if you ask.
Hear it from the brands we run measurement for.
Post-purchase surveys are included from Starter ($750/mo) and up.
Survey questions, answered.
What is a post-purchase survey?
A post-purchase survey is a short questionnaire shown right after checkout, usually opening with "How did you hear about us?". Because the buyer answers seconds after purchasing, response rates and answer quality are high, and the answers capture channels tracking pixels cannot see, like TV, podcasts and word of mouth.
Do you cap how many responses I can collect?
No. No response quotas and no per-response fees, on any plan that includes surveys. Tools that meter responses put you in the position of hoping fewer customers answer, which is a strange thing to want from a research product.
How long does it take to get live?
About ten minutes on Shopify, through a guided six-step setup using an app your store owns, so the connection belongs to you. On any other platform it is a single script tag on your confirmation page.
What plan includes post-purchase surveys?
From Starter ($750/mo) and up, along with Multi-Touch Attribution. Holdouts and media mix modeling are in every plan, free and up.
Find out what your pixel has been missing.
Talk to a founder and we will show you what your buyers say once you start asking them properly, or sign up and upgrade to Starter to run it today.